{{docname|StorageService:1.3 Service Object Definition}}
{{appdate|May 2017}}
{{trname|TR-140a3}}
Update file system and connection enumerations
Added ''SMART'' data model
Resilient File System - Microsoft
Mac OS Standard format
Mac OS Extended format
Journaled Mac OS Extended format
ReiserFS
Zetta File System
Encrypted File System
Extended File Allocation Table for Flash memory
SATA 3.0 Gbit/s
SATA 6.0 Gbit/s
SATA 16.0 Gbit/s
serial attached SCSI 3.0 Gbit/s
serial attached SCSI 6.0 Gbit/s
serial attached SCSI 12.0 Gbit/s
serial attached SCSI 22.5 Gbit/s
Specifies the type of the physical medium
Hybrid Drive
This object provides SMART data information about the physical medium. SMART attributes are not standardized, but many vendors provide the data below.
Count of reallocated sectors. When the hard drive finds a read/write/verification error, it marks this sector as "reallocated" and transfers data to a special reserved area (spare area).
This process is also known as remapping, and "reallocated" sectors are called remaps. However, as the number of reallocated sectors increases, the read/write speed tends to decrease.
The raw value represents a count of the number of bad sectors that have been found and remapped. Thus, the higher the attribute value, the more sectors the drive has had to reallocate.
Count of hours in power-on state. It shows total count of {{units}} in power-on state.
Count of retry of spin start attempts. This attribute stores a total count of the spin start attempts to reach the fully operational speed (under the condition that the first attempt was unsuccessful). An increase of this attribute value is a sign of problems in the hard disk mechanical subsystem.
The count of full hard disk power on/off cycles.
Current internal temperature in {{units}}.
Count of remap operations. The raw value of this attribute shows the total count of attempts to transfer data from reallocated sectors to a spare area.
Both successful and unsuccessful attempts are counted.
Count of "unstable" sectors (waiting to be remapped, because of unrecoverable read errors). If an unstable sector is subsequently read successfully, the sector is remapped and this value is decreased.
The total number of uncorrectable errors when reading/writing a sector.
A rise in the value of this attribute indicates defects of the disk surface and/or problems in the mechanical subsystem.
Total number of unrecoverable read errors.
Total number of off-track errors.
Total number of errors when writing a sector.
Percentage of the spare sectors that can be used for reallocations remaining.
Estimated number of {{units}} until the failure model in the device predicts the drive will fail. -1 means the failure model is unable to make a prediction.